Double Free in PDFium in Google Chrome on Windows

Executive Summary

This vulnerability is a double free issue in PDFium, which is the PDF rendering engine used by Google Chrome. A double free occurs when a program frees the same memory block twice, which can lead to memory corruption and potentially allow an attacker to execute arbitrary code within the sandboxed environment of Chrome.

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Detection Guidance

This vulnerability involves a double free in PDFium within Google Chrome. Detection primarily involves checking the installed version of Google Chrome. If your version is prior to 153.0.8010.36, the system is vulnerable. Use commands like 'google-chrome --version' or check via package manager (e.g., 'apt list --installed | grep google-chrome').

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Impact Analysis

If exploited, this vulnerability could allow a remote attacker to run malicious code on your system by tricking you into opening a specially crafted PDF file. Since it affects Chrome's sandbox, the attacker's code would run with limited privileges, but could still cause significant harm such as stealing data or installing malware.

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Compliance Impact

This vulnerability could potentially lead to unauthorized code execution, which may result in data breaches or unauthorized access to sensitive information. Such incidents could violate compliance requirements under GDPR or HIPAA if personal or health data is exposed.

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Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later immediately. Disable PDF viewing in Chrome if possible or use alternative PDF viewers until the update is applied. Avoid opening untrusted PDF files.

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